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Method for detecting leakage flow of automobile oil tank cover

A technology of leakage flow and detection method, applied in the field of devices for measuring force, torque and pressure, can solve the problems of long detection time, high price, complicated operation process, etc., and achieve good stability, high degree of automation, and high detection accuracy. Effect

Active Publication Date: 2015-06-03
SHANGHAI HUF AUTOMOTIVE LOCK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Automobile fuel tank cap leakage flow detection machine is a special detection equipment specially used to test the automobile fuel tank cap. Although the test results can meet the needs, there are generally disadvantages such as complicated operation process, long detection time and high price.

Method used

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  • Method for detecting leakage flow of automobile oil tank cover
  • Method for detecting leakage flow of automobile oil tank cover

Examples

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Embodiment 1

[0018] A method for detecting the leakage flow rate of the fuel tank cap of an automobile, which is carried out sequentially according to the following steps:

[0019] a. Prepare test instruments, b. Detect torque, c. Detect negative pressure flow, d. Detect leakage and e. Detect positive pressure flow, characterized by:

[0020] When preparing the test instrument in step a, proceed as follows: figure 1 with figure 2 As shown, the test instrument includes a bracket 1, a bottom plate telescopic cylinder 2, a piston 21, a sealing ring 22, a bottom plate 3, a rotating disc 4, an indexing rotator 41, a base 5, a tightening torque claw 6, a bracket telescopic cylinder 7 and a rotating Cylinder 8, bracket 1 is fixed on the base plate 3, the base plate telescopic cylinder 2 is vertically fixed below the base plate 3, a through hole is opened on the base plate 3, the piston 21 slides up and down along the inner wall of the base plate telescopic cylinder 2 and the top of the piston 2...

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Abstract

The invention relates to the field of devices or methods for measuring force, torque and pressure, in particular to a method for detecting leakage flow of an automobile oil tank cover. The method for detecting leakage flow of an automobile oil tank cover comprises the following steps: a. preparing testing instruments; b. detecting torque; c. detecting negative flow; d. detecting leakage sum; and e. detecting positive flow. The method for detecting leakage flow of an automobile oil tank cover is characterized by carrying out Step a of preparing the testing instruments according to following steps, wherein the testing instrument comprises a bracket (1), a bottom plate telescopic air cylinder (2), a piston (21), a sealing ring (22), a bottom plate (3), a rotary round disk (4), a division rotator (41), a base (5), a tightening torque claw (6), a bracket telescopic air cylinder (7) and a rotary air cylinder (8). According to the method, the automatic degree is high, the stability is good, and the detection precision is high.

Description

technical field [0001] The invention relates to the field of devices or methods for measuring force, torque and pressure, in particular to a method for detecting leakage flow of an automobile fuel tank cap. Background technique [0002] The fuel tank cap of a car is an important control part related to driving safety. The fuel tank cap has the function of sealing the fuel tank. At the same time, because the internal air pressure of the fuel tank will increase when the fuel tank is heated, and the internal and external pressure difference of the fuel tank will increase. There is a risk of explosion, so The fuel tank cap also needs to have a "breathing" function. The so-called "breathing" function means that when the fuel tank is heated and the internal pressure increases to a certain value, the fuel tank cap discharges pressure through the internal pressure regulating valve, thereby avoiding the danger of fuel tank explosion; and When negative pressure is formed after fuel co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/26G01L5/00
Inventor 阮联钧潘云生杨建夫
Owner SHANGHAI HUF AUTOMOTIVE LOCK CO LTD